How should teams govern Active Directory service accounts in hybrid estates?

TL;DR: Active Directory service accounts remain a quiet but persistent non-human identity risk because they often outlive their purpose, inherit broad permissions, and become difficult to own or remediate, according to Entro Security. Legacy directory controls do not solve the governance problem when effective access, ownership, and blast radius are still unclear.

NHIMG editorial — based on research published by Entro Security.

Questions worth separating out

Q: How should security teams govern Active Directory service accounts?

A: Treat them as non-human identities with full lifecycle controls.

Q: Why do Active Directory service accounts create more risk than their labels suggest?

A: Because the label often hides the real permission set.

Q: What is the difference between visible permissions and effective access in AD?

A: Visible permissions are the explicit rights shown on the account or object.

Practitioner guidance

• Inventory AD service accounts as NHIs Fold on-prem service accounts into the same NHI inventory, ownership, and review process used for cloud secrets and workload identities.
• Map effective access end to end Expand nested groups, OU scope, delegated rights, and object-level ACLs and ACEs before deciding whether an account is safe.
• Assign accountable owners before remediation Require a named human or team for every service account, then tie rotation, right-sizing, and decommissioning to that owner.

As hybrid estates deepen, the programme that can answer who owns the identity, what it can touch, and how safely it can be changed will outperform the programme that only counts objects?

👉 Read Entro Security’s analysis of Active Directory service account risk →

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